You have chosen 'Introduction to Mathematical Logic' by Michal Walicki, 'Grundlagen (Foundations of Theory of Manifolds)' by George Cantor and 'Axiomatic Theories of Truth' by Volker Halbach
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Natural Theory, or select a subheading: |
| A. | Speculations on Nature | |
| B. | Natural Kinds | |
| C. | Causation | |
| D. | Laws of Nature |